People who smile are rated higher in both generosity and extraversion and when people share with each other they tend to display genuine smiles (Mehu et al., 2007).

微笑的人被认为更加慷慨、更外向；当人们在和别人分享时，倾向于展现真诚的微笑。(Mehu et al .，2007)。

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People who smile are rated higher in both generosity and extraversion and when people share with each other they tend to display genuine smiles (Mehu et al., 2007).

微笑的人被认为更加慷慨、更外向；当人们在和别人分享时，倾向于展现真诚的微笑。(Mehu et al .，2007)。

youdao